1Z0-804: Java SE 7 Programmer II

1Z0-804: Java SE 7 Programmer II

Dit examen is onderdeel van de Oracle Certified Professional certificering.

Trainingen

Exameneisen

Java Class Design Use access modifiers: private, protected, and public Override methods Overload constructors and methods Use the instanceof operator and casting Use virtual method invocation Override the hashCode, equals, and toString methods from the Object class to improve the functionality of your class. Use package and import statements

Advanced Class Design Identify when and how to apply abstract classes Construct abstract Java classes and subclasses Use the static and final keywords Create top-level and nested classes Use enumerated types

Generics and Collections Create a generic class Use the diamond for type inference Analyze the interoperability of collections that use raw types and generic types Use wrapper classes, autoboxing and unboxing Create and use List, Set and Deque implementations Create and use Map implementations Use java.util.Comparator and java.lang.Comparable Sort and search arrays and lists

Exceptions and Assertions Use throw and throws statements Develop code that handles multiple Exception types in a single catch block Develop code that uses try-with-resources statements (including using classes that implement the AutoCloseable interface) Create custom exceptions Test invariants by using assertions

Java I/O Fundamentals Read and write data from the console Use streams to read from and write to files by using classes in the java.io package including BufferedReader, BufferedWriter, File, FileReader, FileWriter, DataInputStream, DataOutputStream, ObjectOutputStream, ObjectInputStream, and PrintWriter

Java File I/O (NIO.2) Operate on file and directory paths with the Path class Check, delete, copy, or move a file or directory with the Files class Read and change file and directory attributes, focusing on the BasicFileAttributes, DosFileAttributes, and PosixFileAttributes interfaces Recursively access a directory tree using the DirectoryStream and FileVisitor interfaces Find a file with the PathMatcher interface Watch a directory for changes with the WatchService interface

Building Database Applications with JDBC < /div> Describe the interfaces that make up the core of the JDBC API (including the Driver, Connection, Statement, and ResultSet interfaces and their relationship to provider implementations) Identify the components required to connect to a database using the DriverManager class (including the jdbc URL) Submit queries and read results from the database (including creating statements, returning result sets, iterating through the results, and properly closing result sets, statements, and connections) Use JDBC transactions (including disabling auto-commit mode, committing and rolling back transactions, and setting and rolling back to savepoints) Construct and use RowSet objects using the RowSetProvider class and the RowSetFactory interface Create and use PreparedStatement and CallableStatement objects

Threads Create and use the Thread class and the Runnable interface Manage and control thread lifecycle Synchronize thread access to shared data Identify code that may not execute correctly in a multi-threaded environment.

Concurrency Use collections from the java.util.concurrent package with a focus on the advantages over and differences from the traditional java.util collections. Use Lock, ReadWriteLock, and ReentrantLock classes in the java.util.concurrent.locks package to support lock-free thread-safe programming on single variables. Use Executor, ExecutorService, Executors, Callable, and Future to execute tasks using thread pools. Use the parallel Fork/Join Framework

Localization Read and set the locale by using the Locale object Build a resource bundle for each locale Call a resource bundle from an application Format dates, numbers, and currency values for localization with the NumberFormat and DateFormat classes (including number format patterns) Describe the advantages of localizing an application Define a locale using language and country codes